Automatic lock slider



S. G. KEDZIERSKI AUTOMATIC LOCK SLIDER June 12, 1962 2 Sheets-Sheet 1Filed June 16, 1960 INVENTOR. maawdfifspzwmn By G W Arrow/7 June 12,1962 s. s. KEDZIERSKI AUTOMATIC LOCK SLIDER 2 Sheets-Sheet 2 Filed June16, 1960.

Tia. E.

INVENTOR. 5141/10 d fipz/aerx/ "Q 6 United States Patent hce assazzsFatented June 12, lb tfiz 3,638,226 AUTOMATKC 08K SHEER Stanley G.Kedzierski, lviieadville, 9a., assignor to Talon, line, a corporation ofPennsylvania Filed June 16, 1%0, Ser. No. 36,593 4 Claims. (Qt. 2425.l4)

This invention relates to sliders for slide fasteners and, moreparticularly, to an improved automatic lock slider therefor.

Various types of automatic lock sliders have been heretofore suggestedand used and while most of these were practical and satisfactory formost purposes, they were entirely unsatisfactory for other purposesespecially if garments or articles with which the sliders wereincorporated were subjected to frequent laundering or pressingoperations. Often-times the locking member of such sliders would becomedeformed or displaced from the slider body during pressing or launderingdestroying the locking effect of the locking member and defeating thepurpose for which the locking member was intended, namely, to lock theslider against unintentional movement along the fastener.

Also, most types of automatic lock Sliders heretofore suggested and usedconsisted of a multiplicity of parts which were expensive and difficultto fabricate and assemble, thereby resulting in a relatively expensiveproduct. Further, in many constructions the locking member extended outa considerable distance beyond the wing of the slider body on which itwas mounted thereby lending itself to destructive forces which, ofcourse, was also object-ionable.

Accordingly, it is the general object of the present in vention toprovide an improved automatic lock slider for slide fasteners in whichall the above mentioned disadvantages have been eliminated and which issimple in its construction and, at the same time, efficient andeffective in its use.

It is a most important object of the invention to provide an improvedautomatic lock slider wherein there is provided a new and novel mannerof attaching the locking member to the slider body and means forsupporting the same so as to eliminate any danger of damage ordeformation thereof.

It is another object of this invention to provide an improved automaticlock slider wherein overall thickness of the slider is reduced to aminimum so that the locking member will not project an unreasonabledistance above the wing of the slider body on which it is mounted.'

Various other objects and advantages of this invention will be moreapparent in the course of the following specification, and will beparticularly pointed out in the appended claims.

In the accompanying drawings, there is shown for the purpose ofillustration, an embodiment which my invention may assume in practice.

In these drawings:

FIG. 1 is a fragmentary plan view of a slide fastener having theimproved lock slider of the present invention incorporated therewith,

FIG. 2 is a side elevational view of the improved lock sliderconstructed in accordance with the present invention,

FIG. 3 is an end view of the same,

FIG. 4 is a sectional view taken on line 4-4 of FIG. 1,

FIG. 5 is a sectional view taken on line 55 of FIG. 1 showing thelocking member in its locked position,

FIG. 6 is a sectional view similar to FIG. 5 showing the locking memberin its unlocked position,

FIG. 7 is a plan view of the slider body with the locking memberremoved, and

FIG. 8 is a perspective View of the locking member.

Referring more particularly to the drawings, there is shown in FIG. 1, aconventional type slide fastener comprising a series of spaced-apartinterlocking fastener elements 2 attached to the opposed beaded edges ofa pair of stringer tapes 3. There is mounted on the fastener elements 2,the slider, generally designated at 4, of the present invention forlongitudinal movement therealong for engaging and disengaging thefastener elements in a manner well known to those skilled in the art.This slider consists generally of a body member having spaced-apartupper and lower wings 5 and 6, respectively, connected at one endthereof by a neck portion 7 so as to provide substantially a Y-shapedchannel 8 within the slider body.

According to the present invention, there is arranged in the outer sideof the upper wing 5 centrally thereof and adjacent the neck portion 7, alug-like portion 9 having a longitudinally extending channel Illarranged in the upper side thereof so as to provide side walls 12 toeither side thereof.

There is provided a elongated yieldable locking member 13 which is madepreferably from relatively thin resilient metallic stock. The upper end14 of this locking member l3 has a width slightly less than the channelit} in which it is disposed with the extreme end bent at right angles soas to provide an inwardly extending anchoring end portion 15. Theportion 16 immediately below the upper end portion M has a widthpreferably slightly less than the channel ltl so as to permit thisportion to move freely in this channel.

On the other or lower end of this locking member 13, there is provided arelatively larger substantially rectangular-shaped box-like or cap-likeportion 17 having an in- Wardly extending side wall 18 arranged on eachside thereof and an end wall 19. There is arranged on each of the sidewalls 1%, an inwardly extending finger-like portion 20 and on at leastone of these side walls 18, there is provided a locking projection 21which is adapted to project into the slider channel 8 in one position ofthe locking member for a purpose and in a manner hereinafter to bedescribed.

The locking member 13 is mounted on the slider body 4 in the followingmanner. The locking member is positioned on the slider body so that theupper end 14 thereof is positioned in the channel 10 between the sidewalls 12. The upper ends of each of the side walls 12 are thenpreferably staked or struck inwardly, as at 22, as shown more clearly inFIGS. 1 and 4 of the drawings, so as to hold the locking member securelyin position on the slider body.

The opposite end of the locking member 13 extends downwardly over theupper wing 5 with the rectangularshaped lower end portion l7 disposedover and around the upper end of an angularly arranged lug-like portion23 struck up from the upper Wing 5 of the slider body, as more clearlyshown in FIGS. 5 and 6, which is adapted to limit the inward movement ofthe locking member. On the under side of this lug-like portion 23, thereis provided a shoulder 24 with which the finger-like portions 20cooperate to limit the outward movement of the locking member. In underand around this lug-like portion 23, there is arranged in the sliderwing 5, a rectangular-shaped aperture 25 into and through which thelocking projection 21 extends and in which the finger-like projections20 are disposed.

There is provided an elongated pull member 26 having a transverselyextending trunnion portion 27 which is disposed between the lockingmember 13 and the upper side of the upper Wing 5 in the space betweenthe lugs 9 and '23 and which is adapted to cooperate with the angularlyarranged edges 28 the side walls 18 of the locking member to actuate thesame and to move the slider along the fastener elements so as to engageand disengage the same in a manner well known to those skilled in theart.

As a result of my invention, it will be seen that there is provided animproved lock slider which has a relatively flat appearance andconsisting of a minimum number of parts which may be easily andinexpensively fabricated and having :a locking member which can beconveniently assembled on the slider body.

While I have shown and described an embodiment which my invention mayassume in practice, it will be understood that this embodiment is merelyfor the purpose of illustration and description, and that other formsmay be devised within the scope of my invention as defined in theappended claims.

What I claim as my invention is:

1. In a lock slider for slide fasteners, a slider body comprising a pairof spaced-apart wing portions connected at one end by a neck portion soas to provide a channel therebetween, a lug-like portion arranged on theouter side of one of said Wing portions adjacent said neck portion, saidlug-like portion having a longitudinally extending channel arranged inthe upper side thereof, an elongated yieldable substantially flatlocking member having one end thereof disposed in said. last mentionedchannel and which end portion rests on said upper side of said lug-likeportion, means for holding that end of said locking member securely onsaid lug-like portion and in said channel, an elongated substantiallyrectangular-shaped box-like portion arranged on the opposite end of saidlocking member having a side wall arranged to either side thereof,another lug-like portion carried by said wing portion over and aroundwhich said rectangular-shaped boxlike portion is disposed and on whichit is adapted to rest in one position thereof, an inwardly extendingfinger-like portion arranged on at least one of said side walls whichprojects in under said second lug-like portion and which cooperatestherewith to limit the outward movement of the locking member, a lockingprojection arranged on the lower edge of at least one of said side wallswhich extends into and through an aperture in said wing adjacent saidsecond lug-like portion and normally into said slider channel, and apull member having a transversely extending portion on one end thereofwhich is disposed between the locking member and wing portion adjacentsaid rectangular-shaped box-like portion.

2. In a lock slider for slide fasteners, the combination as defined inclaim 1, wherein the inner edges of the side walls of therectangular-shaped box-like portion of the 41 locking member arearranged angular-1y and cooperate with the trunnion portion of the pullmember.

3. In a lock slider for slide fasteners, the combination as defined inclaim 1, wherein the means for holding the locking member securely inthe channel consists of protuberances struck-up from the inner sides ofthe side walls of said channel so as to abut and extend over the lockingmember.

4. In a lock slider for slide fasteners, a slider body comprising a pairof spaced-apart wing portions connected at one by a neck portion so asto provide a channel therebetween, a lug-like portion arranged on theouter side of one of said wing portions adjacent said neck portion, saidlug-like portion having a longitudinally extending channel arrangedcentrally in the upper side thereof, an elongated, inherently resilient,substantially flat locking member having a relatively narrow end portionwhich is positioned in said second channel on said lug-like portion, theside walls of said second channel being deformed and cooperating withsaid narrow end portion of said locking member for holding same securelyin said channel and on said lug-like portion, a substantiallyrectangular-shaped box-like portion arranged on the opposite end of saidlocking member having a side wall arranged to either side thereof,another lug-like portion carried by said wing portion over and aroundwhich said rectangular-shaped box-like portion is disposed and on whichit is adapted to rest in one position thereof, an inwardly extendingfinger-like portion arranged on at least one of said side walls whichprojects in under said second lug-like portion and which cooperatestherewith to limit the outward movement of the locking member, a lockingprojection arranged on the lower edge of at least one of said side wallswhich extends into and through an aperture in said wing adjacent saidsecond lug-like portion and normally into said slider channel, and apull member having a transversely extending portion on one end thereofwhich is disposed between the locking memher and wing portion adjacentsaid rectangular-shaped box-like portion.

References Cited in the file of this patent UNITED STATES PATENTS

